Improved machine for cutting heel-seats



@witch taten @anni @frn ge o ...,A i ARZA KEITH, or NORTH BRIDGEWATER,MASSACHUSETTS'.

Leners Patenten. P{8,211, ma May 26,1868.

@te .rtgchuh rentrer tu in tutti tetters rteut mit making artt nf tigesmc.

TO ALL VVIIOM ll` MAY CONCERN:

Beit known that I, AnzA B. KEITH, of North Bridgewater, in the county ofPlymouth, and State of Massachusetts, have invented certain new anduseful Improvements in Machines for Cutting HeeLSeats; and Iflo herebydeclare that the following, taken in connection with the drawings whichaccompany and form 'part of this specification, is a description ofmy'invention suiiicient to Venable those4 skilled in the art to practiseit.

In boots and shoes there is inserted at the shank, between the inner andouter soles, a stitfening piece, which gives considerable convexity tothe sole,'extending to theV rear so far that the heel is seated upon aportion of the convexity. In boots there is more need of thisshankfstiifening piece than in shoes, as with a exible shank it isdiiiicult to remove a boot from the foot.. l

l The object of the machine which is the subject of my'invent'ion is tocut 4out the concavity in the heel to i t upon the Voonvexity caused bythe filling-piece, which convexity does not extend to the rear of theheel, but only commences about midway, and then increases till, :at thefront or straight edge of the heel, the eonvexity of the shank is aboutat its maximum. My invention consists in -combining,`with areciprocating or vibrating gouge-like knife, meansfor relativeadjustment between the knife and the heel-holder, so as to be able, withthe same machine, to cut heel-seatsito fit upon different Shanks, and toaccommodate different shapes and sizes of heels.

The drawing shows, in vertical longitudinal section, a'machine in whichx'ny invention is embodied.

a is a bed-piece, to which is pivoted, at 6, the cutter `carrying-arm c,which, in'makng a stroke to c ut, is carried downward, and is returnedby any convenient means, as by ay treadle and spring, for example.`,'.lhe cutter d is held in place by a side `set-screw against its'sh-ank, and the thrust ofthe cut is taken on a set-screw, e, which canbe adjusted as the cutter or as the' cutting-block f is worn away.

The cutting-block is held in place against a chock, g, by the screw 71and forms the bed on which the front` face of the heei rests, and onwhich the edge of the cutter descends.V

The carriage z' is made to slide back .and forth on the bed a, byturning the screwj,so as to adjust the whole heel toward or from thetraversing path of the ,knife-edge. j'

The piece c is pivoted to slide c', so that its anglemay be changed byoperationof screw l andthe co-operative springs m, to change the angleat which knife d will cut the seatof the heel. y

l On. the piece 7c is an ear, n, in which is a s`et-scr`ew, by which theposition of the heel is gangedcentrally i with respect to the knife. i yThe slidez' being adjusted with respect to the thick-ness off a heel,and the piece 7c being inclined forward or back, so as to lgivemore orless inclination to the cut, and the screwin the earn being adjusted sothat when th operator rests a heel on the block f, and against' thepiece k, the position of the heel lshall be central with respect `to theknife, the lever c is caused tovibrate, to force the knife through thematerial of the heel, from which a chip is gouged out to correspond tothe coni'exity made in the sole by the shank-piece where thehecl has itsseat. It'is not, however, intendedto dispense withvthe employment ofthetriangular rand-piece, which is worked i under the edge yof the heel onits outer convex surface. i

I claim so combining, with a reciprocating or vibrating-knife, d, alicei-support, lc, that relative adjustment may be made between theVtwo, substantially as and.fer the pur-pose specified.

Also, pivoting the'piece t' to the slide z', arid combining therewithmeans for changing the angle'of lc, sub,- stantiallyuas and for thcpurpose described.

Also, in combination with the piece 7c, a side adjusting-screw,substantially as set forth.

1 ARZA B. KEITH. Witnesses:

J. B. CROSBY, FRANCIS GoULn.

